#!/usr/bin/env bash
#
# Prepare Flathub submission for Coop
# This script:
# 1. Vendors all Rust dependencies (crates.io + git)
# 2. Generates release info for metainfo.xml
# 3. Creates the Flathub manifest (su.reya.coop.yml)
#
# Usage: ./script/prepare-flathub [--release-date YYYY-MM-DD]

set -euo pipefail
cd "$(dirname "$0")/.."

# Configuration
APP_ID="su.reya.coop"
APP_NAME="Coop"
REPO_URL="https://git.reya.su/reya/coop"
BRANDING_LIGHT="#FFE629"
BRANDING_DARK="#FFE629"

# Parse arguments
RELEASE_DATE=""
while [[ $# -gt 0 ]]; do
    case $1 in
        --release-date)
            RELEASE_DATE="$2"
            shift 2
            ;;
        -h|--help)
            echo "Usage: ${0##*/} [options]"
            echo ""
            echo "Options:"
            echo "  --release-date DATE    Release date in YYYY-MM-DD format (default: today)"
            echo "  -h, --help            Display this help and exit"
            exit 0
            ;;
        *)
            echo "Unknown option: $1" >&2
            exit 1
            ;;
    esac
done

# Get version from workspace
VERSION=$(script/get-crate-version coop)
if [[ -z "$RELEASE_DATE" ]]; then
    RELEASE_DATE=$(date +%Y-%m-%d)
fi

echo "=== Preparing Flathub submission for $APP_NAME v$VERSION ==="
echo ""

# Create flathub directory
mkdir -p flathub
echo "[1/5] Created flathub/ directory"

# Step 2: Vendor all dependencies
echo "[2/5] Vendoring Rust dependencies..."
if [[ -d vendor ]]; then
    echo "      Removing old vendor directory..."
    rm -rf vendor
fi

# Create cargo config for vendoring
mkdir -p .cargo
cat > .cargo/config.toml << 'EOF'
[source.crates-io]
replace-with = "vendored"

[source.vendored]
directory = "vendor"
EOF

# Vendor all dependencies (crates.io + git)
cargo vendor --locked vendor/
echo "      Vendored dependencies to vendor/"

# Create tarball of vendored deps
tar -czf flathub/vendor.tar.gz vendor/
echo "      Created flathub/vendor.tar.gz"

# Step 3: Generate release info for metainfo
echo "[3/5] Generating release info..."
cat > flathub/release-info.xml << EOF
<release version="${VERSION}" date="${RELEASE_DATE}">
  <description>
    <p>Release version ${VERSION}</p>
  </description>
</release>
EOF
echo "      Created flathub/release-info.xml"

# Step 4: Generate the metainfo file with release info
echo "[4/5] Generating metainfo.xml..."
export APP_ID APP_NAME BRANDING_LIGHT BRANDING_DARK
cat crates/coop/resources/flatpak/coop.metainfo.xml.in | \
    sed -e "/@release_info@/r flathub/release-info.xml" -e '/@release_info@/d' \
    > flathub/${APP_ID}.metainfo.xml
echo "      Created flathub/${APP_ID}.metainfo.xml"

# Step 5: Generate the Flatpak manifest
echo "[5/5] Generating Flatpak manifest..."

# Get current commit hash
COMMIT=$(git rev-parse HEAD)

# Generate the YAML manifest
cat > flathub/${APP_ID}.yml << 'MANIFEST_EOF'
id: su.reya.coop
runtime: org.freedesktop.Platform
runtime-version: "24.08"
sdk: org.freedesktop.Sdk
sdk-extensions:
  - org.freedesktop.Sdk.Extension.rust-stable
  - org.freedesktop.Sdk.Extension.llvm18
command: coop
finish-args:
  - --talk-name=org.freedesktop.Flatpak
  - --device=dri
  - --share=ipc
  - --share=network
  - --socket=wayland
  - --socket=fallback-x11
  - --socket=pulseaudio
  - --filesystem=host

build-options:
  append-path: /usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm18/bin
  env:
    CC: clang
    CXX: clang++

modules:
  - name: coop
    buildsystem: simple
    build-options:
      env:
        CARGO_HOME: /run/build/coop/cargo
        CARGO_NET_OFFLINE: "true"
        RELEASE_VERSION: "@VERSION@"
    build-commands:
      # Setup vendored dependencies
      - mkdir -p .cargo
      - cp cargo-config.toml .cargo/config.toml

      # Extract vendored deps
      - tar -xzf vendor.tar.gz

      # Build the project (entire workspace, then install coop binary)
      - cargo build --release --offline --package coop

      # Install binary
      - install -Dm755 target/release/coop /app/bin/coop

      # Install icons
      - install -Dm644 crates/coop/resources/icon.png /app/share/icons/hicolor/512x512/apps/su.reya.coop.png
      - install -Dm644 crates/coop/resources/icon@2x.png /app/share/icons/hicolor/1024x1024/apps/su.reya.coop.png

      # Install desktop file
      - |
        export APP_ID="su.reya.coop"
        export APP_ICON="su.reya.coop"
        export APP_NAME="Coop"
        export APP_CLI="coop"
        export APP_ARGS="%U"
        export DO_STARTUP_NOTIFY="true"
        envsubst < crates/coop/resources/coop.desktop.in > coop.desktop
        install -Dm644 coop.desktop /app/share/applications/su.reya.coop.desktop

      # Install metainfo (use pre-generated one with release info)
      - install -Dm644 su.reya.coop.metainfo.xml /app/share/metainfo/su.reya.coop.metainfo.xml

    sources:
      # Main source code - specific commit
      - type: git
        url: https://git.reya.su/reya/coop.git
        commit: "@COMMIT@"
        tag: "v@VERSION@"

      # Vendored dependencies tarball (generated by this script)
      - type: file
        path: vendor.tar.gz
        sha256: "@VENDOR_SHA256@"

      # Pre-generated metainfo with release info
      - type: file
        path: su.reya.coop.metainfo.xml
        sha256: "@METAINFO_SHA256@"

      # Cargo config for vendoring
      - type: file
        path: cargo-config.toml
        sha256: "@CARGO_CONFIG_SHA256@"
MANIFEST_EOF

# Calculate SHA256 hashes
VENDOR_SHA256=$(sha256sum flathub/vendor.tar.gz | cut -d' ' -f1)
METAINFO_SHA256=$(sha256sum flathub/${APP_ID}.metainfo.xml | cut -d' ' -f1)

# Create cargo-config.toml
mkdir -p flathub
cat > flathub/cargo-config.toml << 'EOF'
[source.crates-io]
replace-with = "vendored"

[source.vendored]
directory = "vendor"
EOF
CARGO_CONFIG_SHA256=$(sha256sum flathub/cargo-config.toml | cut -d' ' -f1)

# Substitute values into the manifest
sed -i \
    -e "s/@VERSION@/${VERSION}/g" \
    -e "s/@COMMIT@/${COMMIT}/g" \
    -e "s/@VENDOR_SHA256@/${VENDOR_SHA256}/g" \
    -e "s/@METAINFO_SHA256@/${METAINFO_SHA256}/g" \
    -e "s/@CARGO_CONFIG_SHA256@/${CARGO_CONFIG_SHA256}/g" \
    flathub/${APP_ID}.yml

echo "      Created flathub/${APP_ID}.yml"

echo ""
echo "=== Flathub preparation complete! ==="
echo ""
echo "Files generated in flathub/:"
echo "  - ${APP_ID}.yml           # Main Flatpak manifest (submit this to Flathub)"
echo "  - ${APP_ID}.metainfo.xml  # AppStream metadata with release info"
echo "  - vendor.tar.gz           # Vendored Rust dependencies"
echo "  - cargo-config.toml       # Cargo configuration for vendoring"
echo "  - release-info.xml        # Release info snippet"
echo ""
echo "Next steps:"
echo "  1. Test the build locally:"
echo "       cd flathub && flatpak-builder --user --install --force-clean build ${APP_ID}.yml"
echo ""
echo "  2. If build succeeds, submit to Flathub:"
echo "     - Fork https://github.com/flathub/flathub"
echo "     - Clone: git clone --branch=new-pr git@github.com:YOUR_USERNAME/flathub.git"
echo "     - Copy ONLY ${APP_ID}.yml to the repo"
echo "     - Submit PR against flathub/flathub:new-pr"
echo ""
echo "Note: Make sure you have:"
echo "  - Committed all changes (commit: ${COMMIT})"
echo "  - Tagged the release (tag: v${VERSION})"
echo "  - Pushed the tag to GitHub"